Journal
NATURE COMMUNICATIONS
Volume 11, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41467-020-14816-w
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Funding
- Scalable Nanomanufacturing Program at the US National Science Foundation [CBET1344792]
- Vehicle Technologies Incubator Program at the US Department of Energy [DE-EE0006854]
- ThermoFisher Scientific Graduate Fellowship
- US National Science Foundation [CHE-1465057]
- National Natural Science Foundation of China [21777051]
- XSEDE [TG-DMR170031]
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Supported metal single atom catalysts (SACs) present an emerging class of low-temperature catalysts with high reactivity and selectivity, which, however, face challenges on both durability and practicality. Herein, we report a single-atom Pt catalyst that is strongly anchored on a robust nanowire forest of mesoporous rutile titania grown on the channeled walls of full-size cordierite honeycombs. This Pt SAC exhibits remarkable activity for oxidation of CO and hydrocarbons with 90% conversion at temperatures as low as similar to 160 degrees C under simulated diesel exhaust conditions while using 5 times less Pt-group metals than a commercial oxidation catalyst. Such an excellent low-temperature performance is sustained over hydrothermal aging and sulfation as a result of highly dispersed and isolated active single Pt ions bonded at the Ti vacancy sites with 5 or 6 oxygen ions on titania nanowire surfaces.
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